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We introduce the optimality question to the relaxation in multiple control problems described by Sobolev type nonlinear fractional differential equations with nonlocal control conditions in Banach spaces. Moreover, we consider the…

Optimization and Control · Mathematics 2017-07-21 Amar Debbouche , Juan J. Nieto , Delfim F. M. Torres

This paper deals with fractional Sobolev spaces on a compact Riemannian manifold. We prove a Sobolev inequality in the critical range with an optimal constant for these fractional Sobolev spaces. We use this result to study the existence of…

Analysis of PDEs · Mathematics 2022-09-27 Carolina Rey , Nicolas Saintier

The article is dedicated towards the study of fractional order non-linear differential systems with non-instantaneous impulses involving Riemann-Liouville derivatives with fixed lower limit and appropriate integral type initial conditions…

Optimization and Control · Mathematics 2021-12-15 Lavina Sahijwani , N. Sukavanam , Abdul Haq

In this paper, we are concerned with the mild solutions of Riemann-Liouville fractional differential equations with nonlocal conditions in Banach space. We use Banach contraction principle to prove the existence and uniqueness. Moreover, we…

Classical Analysis and ODEs · Mathematics 2015-07-31 Zhan-Dong Mei , Ji-Gen Peng

Using the concept of fractional derivatives of Riemann$-$Liouville on time scales, we first introduce right fractional Sobolev spaces and characterize them. Then, we prove the equivalence of some norms in the introduced spaces, and obtain…

Functional Analysis · Mathematics 2022-02-22 Xing Hu , Yongkun Li

This manuscript is concerned with the approximate controllability of fractional nonlinear differential equations with nonlocal conditions of order $1<q<2$ in Banach spaces. As far as we know, few articles have investigated this issue. The…

Optimization and Control · Mathematics 2024-11-19 Ahmed Aberqi , Zoubida Echchaffani , Touria Karite

We establish existence, approximate controllability and optimal control of a class of impulsive non-local non-linear fractional dynamical systems in Banach spaces. We use fractional calculus, sectorial operators and Krasnoselskii fixed…

Optimization and Control · Mathematics 2018-07-10 Sarra Guechi , Amar Debbouche , Delfim F. M. Torres

In this paper, we investigate the existence of weak solution for a fractional type problems driven by a nonlocal operator of elliptic type in a fractional Orlicz-Sobolev space, with homogeneous Dirichlet boundary conditions. We first extend…

Analysis of PDEs · Mathematics 2020-04-03 Elhoussine Azroul , Abdelmoujib Benkirane , Mohammed Srati

In this paper, we study a class of fractional optimal control problems. A necessary condition for the existence of an optimal control is provided in the literature. It is commonly given as the existence of a solution of a fractional…

Optimization and Control · Mathematics 2012-03-08 Loïc Bourdin

We study the boundary regional controllability of a class of Riemann-Liouville fractional semilinear sub-diffusion systems with boundary Neumann conditions. The result is obtained by using semi-group theory, the fractional Hilbert…

Optimization and Control · Mathematics 2024-01-19 Asmae Tajani , Fatima-Zahrae El Alaoui , Delfim F. M. Torres

This paper presents some sufficient conditions for the existence of solutions of fractional differential equation with nonlocal multi-point boundary conditions involving Caputo fractional derivative and integral boundary conditions. Our…

Classical Analysis and ODEs · Mathematics 2018-11-28 Faouzi Haddouchi

The artefact is dedicated towards the inspection of nonlinear fractional differential systems involving Riemann-Liouville derivative with higher order and fixed lower limit, including non-instantaneous impulses for existence and uniqueness…

Dynamical Systems · Mathematics 2022-07-29 Lavina Sahijwani , N. Sukavanam

This work is devoted to the study of the existence of at least one weak solution to nonlocal equations involving a general integro-differential operator of fractional type. As a special case, we derive an existence theorem for the…

Analysis of PDEs · Mathematics 2020-04-22 Giovanni Molica Bisci , Dušan D. Repovš

A strong inspiration for studying Sobolev type fractional evolution equations comes from the fact that have been verified to be useful tools in the modeling of many physical processes. We introduce a novel technique for solving Sobolev type…

Analysis of PDEs · Mathematics 2021-02-23 Nazim I. Mahmudov , Arzu Ahmadova , Ismail T. Huseynov

We study the existence of positive solutions for nonlocal systems in gradient form and set in the whole $\mathbb R^N$. A quasilinear fractional Schr\"odinger equation, where the leading operator is the $\frac Ns$-fractional Laplacian, is…

Analysis of PDEs · Mathematics 2025-07-23 Daniele Cassani , Zhisu Liu , Giulio Romani

We first prove the equivalence of two definitions of Riemann-Liouville fractional integral on time scales, then by the concept of fractional derivative of Riemann-Liouville on time scales, we introduce fractional Sobolev spaces,…

Classical Analysis and ODEs · Mathematics 2022-05-27 Xing Hu , Yongkun Li

In this work, we establish some abstract results on the perspective of the fractional Musielak-Sobolev spaces, such as: uniform convexity, Radon-Riesz property with respect to the modular function, $(S_{+})$-property, Brezis-Lieb type Lemma…

Analysis of PDEs · Mathematics 2023-01-12 J. C. de Albuquerque , L. R. S. de Assis , M. L. M. Carvalho , A. Salort

The objective of this paper is twofold. First, we conduct a careful study of various functional inequalities involving the fractional Laplacian operators, including nonlocal Sobolev-Poincar\'e, Nash, Super Poincar\'e and logarithmic Sobolev…

Analysis of PDEs · Mathematics 2024-03-22 Nikolaos Roidos , Yuanzhen Shao

In the first part of this article we deal with the existence of at least three non-trivial weak solutions of a nonlocal problem with nonstandard growth involving a nonlocal Robin type boundary condition. The second part of the article is…

Analysis of PDEs · Mathematics 2020-03-31 Sabri Bahrouni , Ariel Salort

We propose a systematic Gagliardo-type formulation of fractional Sobolev spaces on arbitrary time scales, based on the Lebesgue Delta-measure and the off-diagonal interaction domain induced by the product measure. For fractional orders…

Analysis of PDEs · Mathematics 2026-05-22 Hafida Abbas , Abdelhalim Azzouz , Praveen Agarwal , Delfim F. M. Torres
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